1. Normal spangle premaz: During the normal skrućivanje proces of the pocinčano zavojnica cink sloj, te cink zrna rasti slobodno to form a premaz s s očito spangle morfologija.

2. Small cink cvijet premaz Trajanje The skrućivanje proces od te cink sloj, te cink zrna are umjetno ograničeno to oblik the najmanji mogući cink cvijet premaz.

3. Bez prskanja premazivanje: a premaz dobiveno pode te kemijsko sastav of oplata otopina, s no vidljivo spangle morfologija i a uniforma površina.

4. Cink-željezo legura premaz toplinske obrade čelik traka after passing kroz the pocinčavanje kupka, so the the entire coating oblici an legura sloj od cink i željezo. Ovo premaz has a tamno sivo izgled, ne metalik luster, i is lako pulverizirano tije ti te ti proces. Prikladno for premazi to can be oslikano izravno bez dalje obrada ostalo ne General čišćenje.

5. Debelo premazi: For oboje strane of the pocinčani čelik ploča, premazi With Different Cink Layer Weights Are Required.

6. Završna obrada: Dorada je a hladno valjanje proces s s slight deformacija of pocinčano čelik lim za one or more of the following purposes. Improve the surface appearance of pocinčan steel sheets or be appropriateable for decorative coatings; temporarily minimize the slip lines or creases proizvedeno during processing of finished products, etc.

Što je the use of galvanizirani zavojnica?

Galvanizirani zavojnica a tanki čelik ploča to je uronjeno in a molten cink kupka so a sloj of cink pridržava se to the surface. Galvanizirane zavojnice can be podijeljeno into toplovaljano pocinčano zavojnice zavojnice i hladno valjane vruće-umočene pocinčane zavojnice.

At present, the continuous galvanizing process is mainly used for production, that is, the rolled steel plates are continuously immersed in a plating bath containing molten zinc to make galvanized steel plates. Because galvanized coils have strong corrosion resistance, good surface quality, are conducive to deep processing, and are economical and practical, they are widely used in fields such as construction, home appliances, automobiles, containers, transportation, and household industries. Especially industries such as steel structure construction, automobile manufacturing, and steel warehouse manufacturing. Defects of galvanized coils: Galvanized coils are prone to falling off, scratches, passivation spots, zinc particles, thick edges, air knife streaks, air knife scratches, exposed steel, inclusions, mechanical damage, poor steel base performance, and wavy edges. , warping, different sizes, embossing, different thickness of zinc layer, roller printing and other defects. The main reasons for the peeling off of the zinc layer of galvanized coils are surface oxidation, silicon compounds, cold-rolled emulsion too dirty, NOF section oxidation atmosphere and protective gas dew point too high, unreasonable air-fuel ratio, low hydrogen flow, and oxygen penetration into the furnace. The temperature of the strip entering the pot is low, the furnace pressure in the RWP section is low and the furnace door sucks air, the furnace temperature in the NOF section is low, the grease cannot be evaporated, the aluminum content of the zinc pot is low, the unit speed is too fast, the reduction is insufficient, and the zinc liquid The residence time is too short and the coating is too thick.